ISSN:
0173-0835
Keywords:
Chemistry
;
Biochemistry and Biotechnology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Polyacrylamide gels containing immobilized pH gradients (IPGs) are usually extensively washed in deionized water after polymerization and dried when longer storage is required. The original volume of the gel is readjusted by rehydration in water or a solution of appropriate composition and subsequent evaporation, if necessary, by using a fan for weight control. A more convenient procedure is to put the dried gels back into their casting mold used for polymerization and to fill the mold with the appropriate rehydrating solution. Rehydration to the original volume is completed within 30 min for gels of a thickness of 0.5 mm. With gels to be rehydrated in the presence of urea, it was found that water enters the gel matrix faster than urea; consequently, adjustment to the original gel volume at the required urea concentration is not possible in an excess of rehydration solution, but is easily achieved by the modified rehydration procedure. It was also possible to infuse a urea gradient into the gel matrix perpendicular to the pH gradient axis. The effect of urea on the patterns of inherited human prealbumin variants is demonstrated.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/elps.1150050613
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